... prefabricated house, Minimum Steel Quantity:Q235,Q345, High Construction Efficiency, Long life time, warehouse, factory. If you need: Options 1) Steel Structure ... TECHNICAL TEAM THAT CAN PROVIDE YOU DESIGN, STRUCTURE DRAWINGS, 3D PICTURES, PRODUCTION DRAWINGS, INSTALLATION ... Production lines in Putian FactoryOVERVIEW OF PUTIAN FACTORYsteel structure producing workshop(PTH)welding & cutting(PTH) ...